/*判断IE版本*/
function IEVersion() {
    var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
    var isIE = userAgent.indexOf("compatible") > -1 && userAgent.indexOf("MSIE") > -1; //判断是否IE<11浏览器
    var isEdge = userAgent.indexOf("Edge") > -1 && !isIE; //判断是否IE的Edge浏览器
    var isIE11 = userAgent.indexOf('Trident') > -1 && userAgent.indexOf("rv:11.0") > -1;
    if(isIE) {
        var reIE = new RegExp("MSIE (\\d+\\.\\d+);");
        reIE.test(userAgent);
        var fIEVersion = parseFloat(RegExp["$1"]);
        if(fIEVersion == 7) {
            return 7;
        } else if(fIEVersion == 8) {
            return 8;
        } else if(fIEVersion == 9) {
            return 9;
        } else if(fIEVersion == 10) {
            return 10;
        } else {
            return 6;//IE版本<=7
        }
    } else if(isEdge) {
        return 'edge';//edge
    } else if(isIE11) {
        return 11; //IE11
    }else{
        return -1;//不是ie浏览器
    }
}
/*判断是否为IE*/
function isIE() {
    if (!!window.ActiveXObject || "ActiveXObject" in window) {
        $('.head-center>div').css({
            background: '#666'
        })
        $('.bann').css({
            'position': 'absolute',
            top: '0',
            left: '0',
        })
        var index = 0
        var length = $('.bann').length
        $(".prev").click(function () {
            prev();
        })
        $(".next").click(function () {
            /!* alert(index)*!/
            $('.bann').eq(index).css({
                'z-index': 1,
            }).siblings('.bann').css({
                'z-index': -1,
            })
            index--;
            if (index < 0) {
                index = length - 1;
            }
        })
        $('.swiper-wrapper').mouseover(function () {
            clearInterval(setinter)
        })
        $('.swiper-wrapper').mouseleave(function () {
            setinter = setInterval(function(){
                prev()
            },2000)
        })
        var setinter = setInterval(function () {
            prev()
        }, 2000)

        function prev() {
            $('.bann').eq(index).css({
                'z-index': 1,
            }).siblings('.bann').css({
                'z-index': -1,
            })
            index++;
            if (index >= length) {
                index = 0;
            }
        }
    }
    else {
        banner1();
        banner2();
    }
}